The World Health Organization, which is the leading body for ensuring the Health of Global Citizens, states on its position on 5G spectrum safety as :
www.who.int/.../radiation-5g-mobile-networks-and-health
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Tissue heating is the main mechanism of interaction between radiofrequency fields and the human body. Radiofrequency exposure levels from current technologies result in negligible temperature rise in the human body.
As the frequency increases, there is less penetration into the body tissues and absorption of the energy becomes more confined to the surface of the body (skin and eye). Provided that the overall exposure remains below international guidelines, no consequences for public health are anticipated.
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This is an Unqualified Statement on the Safety of 5G. Whilst the WHO concedes that the tissues of the human may heat upon exposure to 5G spectrum, it does not conclude that it could not cause other illnesses such as Cardiovascular and Cellular diseases from such exposures of extreme frequencies. Clearly, if the WHO accepts that 5G would have a biological effect on Humans, the extent of which could also be severe - cannot therefore be neglected from the statement. Hence, from this statement, it is concluded by implications of an Unqualified Statement, that 5G could cause other severe cardiovascular and cellular disease.
Further the EMF Safety Levels stated in previous research such as that with ICNIRP has been traditionally set for safety assessment of Nuclear Reactors. However, this is different to Mobile Phone 5G radiation, as the EMF generating unit, is held in close proximity to the Human Body. Hence, the particular numbers for EMF Safety that is deduced from testing for safety of Nuclear Reactors in human habitation, cannot be applied as being equivalent for the radiation safety of smaller units but closer proximity EMF object of that of a mobile phone transmitting high energy and Gigahertz frequency.
Hence, it can therefore be concluded that in the current state of research, there is no significant evidence to convince in a Qualified manner, that 5G is safe for Human uses. Till significant research has been conducted, upon which WHO could provide such a Qualified Statement for its safety, implementing Gigahertz Frequency of 5G in the Environment would not be a safe undertaking for any society.